<template>
  <div class="todo-container">
    <div class="todo-wrap">
      <Header :addNewTodo="addNewTodo"/>
      <List :todoList="todoList" :checkHandle="checkHandle" :deleteOneHandle="deleteOneHandle"/>
      <Footer :todoList="todoList" :allCheckHandle="allCheckHandle" :deleteFinishHandle="deleteFinishHandle"/>
    </div>
  </div>
</template>

<script> 
import Header from './Header'
import List from './List'
import Footer from './Footer'
export default {
  name:'App',
  data(){
    return {
      todoList:[]
    }
  },
  components:{
    Header,
    List,
    Footer
  },
  methods:{
    //添加
    addNewTodo(newTodo){
      this.todoList.push(newTodo)
    },
    //单选
    checkHandle(id){
      this.todoList = this.todoList.map(item => {
        return item.id === id ? {...item,done:!item.done} : item
      })
    },
    //删除单个
    deleteOneHandle(id){
      const isDelete = confirm('你真的要删除吗？')
      if(!isDelete) return
      this.todoList = this.todoList.filter(item => {
        return item.id !== id
      })
    },
    //全选
    allCheckHandle(checkValue){
      this.todoList = this.todoList.map(item => {
        return {...item,done:checkValue}
      })
    },
    //删除已完成
    deleteFinishHandle(){
      this.todoList = this.todoList.filter(item => {
        return !item.done
      })
    }
  },
  mounted(){
    this.todoList = JSON.parse(localStorage.getItem('todoList') || '[]')
  },
  watch:{
    todoList:{
      deep:true,
      handler(){
        localStorage.setItem('todoList',JSON.stringify(this.todoList))
      }
    }
  }
}
</script>

<style>
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}
</style>